汉英词典
Chinese-English Dictionary
MEANING OF 共价键
共价键 (共價鍵)
covalent bond (chemistry)
原子间通过共用电子对而形成的化学键。如在形成氯分子时,电子不是从一个氯原子转移到另一个氯原子,而是在两个氯原子之间形成共用电子对,通过共用电子对形成共价键。
gòng () jià/jie () jiàn
EXAMPLE SENTENCES

这三种成分相互交织,直接形成共价键

These three components are interwoven, and direct covalent linkages.

所以这是氟化氢中的氢氟共价键

And so this is the H-F bond in HF.

而关于共价键最关键的一点就在于共用的概念。

And the key word for covalent bonds is the idea of being Shared.

计算了含钴高速钢的价电子结构与共价键能。

The valence electron structures and covalent bond energy have been calculated for cobalt high speed steel.

脱氧核糖核苷酸以共价键连接起来的链。双螺旋由两条DNA链组成。

A covalently linked chain of deoxribonu- cleotides. The double helix is composed of two DNA strands.

共价催化涉及底物与活性位点中的残基或与辅因子形成瞬时共价键

Covalent catalysis involves the substrate forming a transient covalent bond with residues in the active site or with a cofactor.

这是氢的同原子的共价能,在纯氢中,我们有完美的共价键

This is the homonuclear bond energy for hydrogen in pure hydrogen. There we have perfect covalency.

这样制备的吸附剂的性质与承载共价键连接鳌合官能团材料的性质相同。

Thus-prepared sorbents possess the properties of materials bearing covalently-bonded chelating functions.

并列而排的转移rna阅读邻近的密码子,带来氨基酸并将其以共价键连接起来。

Juxtaposed tRNAs, reading adjacent codes, bring together amino acids, which are then covalently joined to together.

配位共价键是其中两个键合电子均来自该键所涉及的原子之一的键。

A coordinate covalent bond is one where both bonding electrons are from one of the atoms involved in the bond.